Its actually not that surprising upon closer inspection. The articles that were focused more general topics (The Cost of Cracking, How to Make it on Craigslist

Its actually not that surprising upon closer inspection. The articles that were focused more general topics (The Cost of Cracking, How to Make it on Craigslist) were generally correlated, while the post that were more hacker specific (Minimum Viable SEO, Headphones for Hackers) did well on HN, but did not receive a lot of general traffic.